Tipping means for motor vehicles



R. s. WOOLDRIDGE. TIPPING MEANS FOR MOTOR VEHICLES.

APPLICATWN FILED OCT. 19, I920- 1,413,309.

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FIG 3. ZM E/VTOR.

Patented Apr. 18, 1922.

R. S. WOOLDRIDGE.

TIPPING MEANS FOR MOTOR VEHICLES.

\ APPLICATION. FILEDYOCT. 5,1920. Patented Apr. 18; i922;

' 4 SHEETS-SHEET 2- 50 5 R. sQwoowmn-ea TIPPING MEANS FOR MOTORVEHlCLES.

V v APPLICATION FILED oh. :9. 1920. j 1,413,309. Patented Apr. 18,1922.

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40 l5) 7 v 4O 25 1 El 1 a R. S. WOOLDRIDGE. I THPING MEANS FOR M0 TORVEHICLES.

Patented Apia 18, 1922.

4 SHEETSFSIHEET 4.

APPLICATION FILED OCT. I9, 1920- FIG 14.

uiiirsul 1 STATES Parser ser es.

ROBERT STANLEY woonnnrnen; or ivnw'rnYiaoorms-rananimr, NEW ZEALAND.

a r. TIPPING Means For iiiocroit VEHICLESL;

To all whom iii nay o oncem." 1

'Be it known that I I5" ROBERT STANLEY WOQLDRIDGE, a subject ofthe Kingof Great Britain, and Ireland, residingat New PlymouthQin theProvincialfDistrict of Tara: naki, Dominion of New Zealand, haveinvented certain new and useful Improvements in, Tipping Means for MotorVehicles,

of which the following is a specification.

This invention relates to hoists for tipping the body-of a motor vehicleof the class in which the power from the motor or engine is utilizedto'operate thehoists and which wire ropes pass'over sheaves upon theupper part of the hoist and-are attached to the body ofthe vehicle. I I

The object of the present invention is to provide a simple and eflicientmechanism which will distribute the weight'of the body evenly upon thechassis of a motor truck during the tipping operation; A further objectis to automatically out 01f the power to 25. shaft is arranged inbearings upon the chas- V Figure 3, is-a planfof adetail. v V Figure 4,isa side elevation. 45 7 reached a predetermined position; e

j Accordlngto 'th simvention transverse the tipping mechanism when thebody sis ofthe'vehicleiand' uponfthis shaft ithe hoist is pivotedorarra'ngedin suchamanner that it will incline towards the body as thebody is tipped. 1 Meansv are also providedtorcut 01f powerwhen the bodyis tipped to the required angle, the operation oftipping and loweringbeing controlled by the operator without leaving his seat.

Means are also provided inorder that the body may be held in anyimmediate; position and lowered without shocklto the 've.-

hicle; 1

The invention is illustrated v in the accom panyingdrawings, whereinFigure "1, is a side elevation.-

Figure 25. is a: plan."

Figure 5; is ,a plan,.and 4 w 7 v Fig'ure'6, is a diagrammatic viewshowin the arrangement ofthe sheaves, and i igure 7, is a frontelevation .ofan alternate formof hoist. v v Figure18,is-a side view, andz p j Figure 9, is a'pl'an of; the cutout mechawhich two rope drums.and" ropes are en ployed;

Application. iiea October 19, 1920. serial ze. 418,0691;

7 (see F igures 8and N9.) and comes into opera- F igure l2 is a sideelevation a fitted with a hydraulic hoist;

'Figi1re s, i's-a frontview ofthe'hoisti Figure 14, is a di'grammatic'view of th connections.

Specification ti Letters Patent Patented Apr;

P Y lieferring first to Figures lgto 3, a horizontal transverse shaft 1is journaled. in

bearings 2 fixed to the chassis 3 and has fixed upon it r0 )e drums 1.The. shaft 1 is driven from t e vehicle engine'through the medium of ashaft 5 having a worm 6 7' (seelgures 7 to '11) fixed thereon, geareiing with a worm wheel '7 'fixed upon the shaft 1. The shaft 5 isconnectedjby a uni.-

v versal joint 6 to a'stub shaft? journaled in a supplementary gear box'9 attached to the ma n gear box" 10. Theistub shaft 7 has a gear11-slideable thereon and located within the gear box. 9. The pinionllsgears with the reverse pinion in the'gear box and-'Qi's put into geartherewith by means of arod i .12 guided in the gear box 9 ando'perated'preferablyby a handflever113 pivoted in it bracketfl i ii eclRuponIthegear bo'x'o 10. The

vtherod l2'fbylfa link The wormf6' and worm.whee1 V7 areyenclosed in'iasuitable housing 16." Upright member's-17 and. 18 are pivotedon theshaft 1 (see Figures -7 and 10) and rigidlyconnected together at theirupper end by across member 19. I The members 17 hand18yare normallyretained vertical by rollers 20, located upon brackets 21upon the frontendof the truck 22 (see Figure 73),, and are adapted to engage behindbrackets 23'uponeaohf-of the Y verticalimembers. o -.V. Upon each drum 1a wire rope 24 is coiled and fixed at one endthereon and the ropes passupwardly and over sheaves 25 and An automatic out out device is providedtion' when" the body'is lifted the'desired engages a'shoulder 30 in theend of the rod 31 which has a slot 32 engaging around "thec1utch-peda1'33. The rod 31'has a'slot} 34 through'which' passes a bolt35 fromga to have both forward and lateral movement,

and is held out of engagement by the use f wring 11 rod-311 eld upby theshaft 1 by a setscrew 29. Th elarm'.

bracket '36., Theslot iii-allows the rod -31 I a pin in the pedal. Thebracket 36 is secured by bolts 60 projecting from a cross member of thechassis 3 (see Figure 10) and passing through slots 61 in order toenable the bracket to be adjusted.

The operation is as follows The rope drums are put into operation by thehand lever 13 and the ropes 24 will be hauled over the sheaves 25thereby raising the body, the hoist inclining towards the body duringthe operation as shown in dotted lines in Figure 1. Whenhthe body hasbeen tipped suiiiciently. by which time the ropes will have coiled uponthe drums 4, one of which will push the rod 31 into engagement with thearm 28, which in turn will push the rod 31 forward and operate theclutch pedal 32, thereby cutting off power to the drum. 7

The body may be lowered or held at any intermediate position by means ofa hand brake drum 39 located upon the shaft?) and such brake is operatedby a lever 41 through the medium of a link 42 and bell crank 43, thelatter being connected to the brake band by a link 44. y

In Figures 4 to 11, a movableshaft 46 is journalled in a guide in thecross member 19 and in a guide 48 fixed tothe members 17 and 18below-the cross member 19. The lower end of the shaft 46 has a sheaveblock 47 pivoted upon it and having .a

160 fixed upon the chassis 3.

sheave 48 pivoted therein. The upper end of the shaft has a sheave block49 pivoted thereon and a sheave 5O pivotedon the block. One rope and onerope drum are employed in Figures 4 to 7 and two ropes are shownemployed in Figure 11. The ropes pass upwardly and over the sheave 25..The rope then passes downwardly and around the sheave 47 and upwardlyaround the sheave 50 and is connected-by a shackle 52 (see Figure 4) andbolt 53 to a bracket 54 fixed to the front of the body 22, so that therope may be easily detached from the body.

The sheaves 48 and 50 beingpivoted .to

the shaft 46 they will align with the rope.

In Figures 4 to 7, the members 17 and 18 are normally retained verticalby coil springs 55, located with the rods 56 and 57, each rodbeing'pivoted in a bracket 58 fixed to each of the members 17 and 18.The rods 56 and 57 pass through holes in a transverse member 59 pivotedin bearings The springs are in compression between themembers 59 andnuts upon the ends of the rods.

The operation is as follows The rope drum is put into operation by thehand lever 13 and the rope '24 will be hauled over its sheaves thereby.raising the body, the hoist inclining towards the body duringtheoperation. When the shackle 52 reaches the block 49 the portion ofrope 'betweenthe sheaves 48 and 50 will tend :to

shorten thereby raising the shaft 46 until the body has been tippedsufiiciently by which time the rope will have coiled upon the drum 4 andreached the rod 31 which it will ush into engagement with the arm 28,wh1ch in turn will push the rod 31 forward and operate the clutch pedal33, thereby cutting off power to the drum.

Referring now to Figures 12 to 14, the hoist consists of a hydrauliccylinder .63 mounted upon a shaft .64 journalled in bearings fixed tothe chassis. The plunger rod 66 has a cross member 67 upon its upper endand sheaves 68 mounted thereon. Ropes 70 fixed at their lower ends to aconvenient portion of the chassis pass over the sheaves and are attachedto brackets 71 upon the forward end of the body. A pipe 72 leads from atank 7 3 for containing the water and then leads to a. pump 74, while apipe 75 leads from the pump to a three-way cook 76. Another pipe 77leads from the threeway cock76 to the pipe 72. Another pipe 7 8 leadsfrom the three-way cock to a gland 79 of any known construction locatedin the end of the shaft 64 so that the shaft can rotate without the pipe78 rotating. A passage 80 through the shaft from the gland com municateswith the cylinder by a pipe 81. Stops 88 prevent the cylinder frommoving forward out of the upright position, and a bracket 84 upon theshort'end of the body retains the cylinder against thestops 88.

IVhemit is desired. to tip the body, the

pump 7-4'is operated from the :engine, of the vehicle and drawsthewater-through the pipe 72 and forces itthrough the three-way cock intothe pipe 78 and thence through the shaft 64 into the cylinder 63. As thebody rises the cylinder will inclinetowardsfthe body as shown in dottedlines in Figure 12.

When it is desired to lower the body the three-way cock is turned to theposition shown in Figure 14 and the weight of the body upon the plungerwill cause the water to flow through the pipe 78, three-way cook 76,pipe 77, and pipe 72 and thence into the tank 73, the flow beingcontrolled by the handle 85 of the three-way cock, sothat the body maybe lowered atthe desired speed.

As the body is beinglowered, thebracket .84 upon the front end of the.body will return the cylinder to -its 'verticalflposition as shown inFigure 12.

Either water or ,oil the pressure medium.

Claims: 1 r 1. In a device of the character described the combinationwith a movablebodyof a motor vehicle, of a transversal shaft journalledupon the chassis of said vehicle, a vertically disposed hoist having itslower may be employed as end pivotally secured to said shat-t, ropedrums carried by said-bOdy an arm carried by said shaft, a rod connectedto the clutch pedal of the vehicle and adapted for engagement with saidrope whereby when said body reaches a predetermined position said rod ispushed into engagement with said arm for disengaging the clutchsubstantially as and for-the purpose specified.

2. In a device of the kind described, a transverse driven shaft, uprightmembers pivoted at their lowerends upon said shaft,

a rope drum upon said shaft, a movable shaft guided in said uprightmembers, sheaves on the upper and lower ends of said movable shaft, arope from the drum passing over said sheaves, and a sheave on saidupright member over which said rope first passes, substantially asdescribed. V

3. In a device for tipping the body of a motor vehicle, a driven ropedrum, upwardly disposed members pivoted at their lower ends in order topermit them to incline to raise the movable shaft to permit the body tobe raised still further, substantially as described. i

4. In a device of the kinddescribed, a

transverse driven shaft, upright members scribing witnesses rope drumsupon said shaft, movable shafts guided in said upright members, sheaveson the upper and lower ends of said shafts, a rope from said drumspassingover said sheaves, a sheave on said upright members over whichsaid rope first passes and means to return'the upright members to theirnormal position, substantially as described.

5. In adevice of the kind described,a

transverse Idriven shaft,,upright members. pivoted at their lower endsupon said shaft,;.

.a rope drum upon said shaft, a movableshaft guided in said: uprightmembers,

sheaves on the upper and lower ends of the. shaft, a rope from said drumpassing. over said sheaves, a sheave on said upright member overwhichsaid rope first passes, and means whereby the rope upon the rope drumwill cause a member to operate the clutch pedal when the body is tippedto the required height, substantially. as described.

' 6.. Ina device of the kind described, an arm upon'the rope drum shaft,2. rod having a shoulder thereon, a springto retain the rodnormallyclear of the arm, and means wherebytherrope will.v cause'the rod to beengaged by the arm when the rope has;

7 65 the drum thereby causing the rod to operate the clutch pedal,substantially as described coiled to a Tpre-determined position upon Intestimony whereof I havev afiixedmy signature in the presence ofthe twosub- I v ROBERT STANLEY wo'otplubcr. Witnesses? r j KnI-TH E. BELL,pivoted at their lower end upon said shaft, 7

T. ELLIs.-

